gdbus-demo/gdbus-multi-method-demo/client/client.c

#include "client.h"

// 发送平方计算
static void send_num(gint input_arg, gint *output_arg, GError **error) {
    com_gdbus_demo_call_send_int_sync(proxy, input_arg, output_arg, NULL, error); // 发送请求
    if (*error != NULL) { // 发送请求失败
        g_print("Failed to call method: %s.\n", (*error)->message);
        g_error_free(*error);
    }
    g_print("Return -> %d\n", *output_arg);
}

// 发送文本请求
static void send_text(const gchar *input_arg, gchar **output_arg, GError **error) {
    com_gdbus_demo_call_send_text_sync(proxy, input_arg, output_arg, NULL, error); // 发送请求
    if (*error != NULL) { // 发送请求失败
        g_print("Failed to call method: %s.\n", (*error)->message);
        g_error_free(*error);
    }
    g_print("Return -> %s\n", *output_arg);
    g_free(*output_arg);
}

// 初始化DBus连接
bool init_dbus_client() {
    GError *proxy_error = NULL;
    GError *connect_error = NULL;
    connection = g_bus_get_sync(G_BUS_TYPE_SESSION, NULL, &connect_error); // 建立连接
    if (connect_error != NULL) { // 连接失败
        g_print("Failed to connect dbus: %s.\n", connect_error->message);
        g_error_free(connect_error);
        return false;
    }
    proxy = com_gdbus_demo_proxy_new_sync(connection, G_DBUS_PROXY_FLAGS_NONE, "com.gdbus.demo",
                                          "/com/gdbus/object", NULL, &proxy_error); // 创建Proxy
    if (proxy == 0) { // 创建Proxy失败
        g_print("Failed to create proxy: %s.\n", proxy_error->message);
        g_error_free(proxy_error);
        return false;
    }
    return true;
}

int main() {
    int num = 7;
    char str[] = "PING";
    GError *error = NULL;
    gint output_num;
    gchar *output_text = NULL;
    if (!init_dbus_client()) { // 初始化DBus失败
        return 0;
    }
    g_print("DBus init successfully.\n"); // DBus连接成功

    g_print("Send -> %d | ", num);
    send_num(num, &output_num, &error);
    g_print("Send -> %s | ", str);
    send_text(str, &output_text, &error);
}